Accelerating integrity checks of code and data stored in non-volatile memory
AssigneeIntel Corporation
InventorBrent M. Ahlquist
Life of this patent
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Abstract
In some embodiments, a command may be used by a host processor to access certain information from a non-volatile memory, together with a message authentication code. That information may be utilized to generate a message authentication code on the processor. Then, in any future accesses, the message authentication code generated by the host processor may be compared to the message authentication code from the non-volatile memory to determine the integrity of data or code that is received from the non-volatile memory.
Claims19
A method comprising:
- receiving in a host a list of protected and unprotected ranges of non-volatile memory;
- and
- reducing the processing to determine authenticity when accessing a protected memory range of the non-volatile memory compared to when accessing an unprotected range of said memory by using a measurement done for data in the past to authenticate different data thereafter.
A computer readable medium storing instructions that, when executed, enable a host processor-based system to:
- receive a list of protected and unprotected ranges of non-volatile memory;
- and
- reduce the processing to determine authenticity when accessing a protected memory range of the non-volatile memory compared to when accessing an unprotected range of said memory by using a previous measurement done for data in the past to authenticate different data thereafter.
A system comprising:
- a host processor;
- a non-volatile memory;
- a memory bus coupled between the host processor and the non-volatile memory;
- and
- the non-volatile memory to store a list of protected and unprotected ranges within said memory, said protected ranges being protected against writes and said unprotected ranges being unprotected against writes, wherein said non-volatile memory to store access control information including information about whether a particular range of memory is write protected.
Dependencies are inferred from the claim text.